Catalase is a tetramer of four polypeptide chains, each over 500 amino acids long.It contains four porphyrin heme (iron) groups that allow the enzyme to react with the hydrogen peroxide.The optimum pH for human catalase is approximately 7, and has a fairly broad maximum (the rate of reaction does not change appreciably at pHs between 6.8 and 7.5).atalase is a tetramer of four polypeptide chains, each over 500 amino acids long.
Josh Duhamel. Joshua David Josh Duhamel (/dÉËmÉl/ dÉ-MEL; born November 14, 1972) is an American actor and former fashion model. After various modeling work, he made his acting debut as Leo du Pres on the ABC daytime soap opera All My Children and later starred as Danny McCoy on NBC's Las Vegas.
About Josh Homme. Josh Homme is an American musician with a net worth of $7 million. He is most famous for being the rhythm guitarist and lead singer for the American rock band Queens Of The Stone Age.Releasing albums âQueens Of The Stone Ageâ and âRated Râ, the band broke through onto the mainstream rock scene in America with the album âSongs Of The Deafâ.The album featured radio hits such as âNo One Knowsâ and âGo With The Flowâ and was also noted for featuring former Nirvana member Dave Grohl playing drums.ince then, Josh and the band have released three more albums which all featured in the top 20 of the Billboard 200, as well as fronting Queens Of The Stone Ages, Josh has also made albums with bands such as Eagles Of Death Metal, Kyuss and Them Crooked Vultures.